In recent years, the incidence of intracranial tumors is on the rise, according to statistics, intracranial tumors account for about 5% of the whole body tumors and 70% of children tumors, while other malignant tumors will eventually have 20-30% transferred to intracranial, due to their infiltrative growth, once they occupy a certain space in the cranium, regardless of their benign or malignant nature, they will inevitably increase the intracranial pressure, compress the brain tissue, damage the central nervous system and endanger the life of patients. The patient’s life is at risk. There are 10 signals to be alert to brain tumor: 1. Early morning headache: headache often occurs at 4 or 5 o’clock in the morning, often waking up with pain in the middle of sleep, and the headache gradually relieves or disappears after getting up with mild activities, so it is called “early morning headache”. Tumor in the posterior cranial fossa can cause neck pain and radiation to the orbit, and the degree of headache gradually increases with the progress of the disease. 2.Visual impairment: Increased intracranial pressure will cause edema due to poor venous blood flow back to the brain, resulting in vision loss. 3. Jet vomiting: Compared with vomiting in gastrointestinal diseases, vomiting in brain tumor patients is not accompanied by abdominal distension, nausea and diarrhea, but when the intracranial pressure increases, “jet vomiting” will appear after headache. 4. Mental abnormalities: Brain tumor located in the frontal lobe of brain can destroy the mental activity of frontal lobe, causing excitement, agitation, depression and other mental abnormalities. 5. Phantom smell: Phantom smell occurs because the temporal lobe located in the lower part of the brain is stimulated by the tumor, and patients often smell odors that do not exist, such as the smell of burning rubber, burnt rice, etc. 6. Monocular protrusion: one side of the eye protrudes forward, and in severe cases, the eyelid is incompletely closed, the most common cause is brain tumor. 7. Hypesthesia: The parietal lobe located in the middle of the cerebral hemisphere is specialized in sensation, and tumor in this part can cause unilateral limb pain and form discrimination and other hypesthesia or loss of sensation. 8.Unilateral deafness: If there is no history of otitis media or trauma, but only one ear has progressive hearing loss, accompanied by ipsilateral tinnitus, it is likely to be caused by intracranial tumor compressing the auditory nerve. 9. Hemiplegia: One is hemiplegia or hemiparesis, which is manifested by little or no movement of the limb on the diseased side. The other is disorder of one limb, which is manifested as clumsy or unstable movement. 10, gigantism and acromegaly: seen in pituitary tumors, adolescents show rapid growth and abnormal height. Adults show acromegaly, such as large chin, large nose, abnormally large hands and feet, etc. In any case, if you have unexplained headache, headache that proceeds to aggravate, etc., it is recommended to go to the hospital early and perform head CT or head MRI examination for early diagnosis and timely treatment.